Description

The CS5394 is a complete analog-to-digital converter for stereo digital audio systems. It performs sampling, analog-to-digital conversion and anti-alias filtering, generating 24-bit values for both left and right inputs in serial form. The output sample rate can be up to 50 kHz per channel.

The CS5394 uses 7th-order, delta-sigma modulation with 64× oversampling followed by digital filtering and decimation, which removes the need for an external antialias filter. The ADC uses a differential architecture which provides excellent noise rejection.

Features

• 24-Bit Conversion

• Complete CMOS Stereo A/D System

   — Delta-Sigma A/D Converters

   — Digital Anti-Alias Filtering

   — S/H Circuitry and Voltage Reference

• Adjustable System Sampling Rates

   — including 32 kHz, 44.1 kHz and 48 kHz

• 117 dB Dynamic Range (A-Weighted)

• -103 dB THD + N

• Differential Analog Circuitry

• Internal 64× Oversampling

• Linear Phase Digital Anti-Alias Filtering

   — with >117 dB Stopband Attenuation

• Single +5 V Power Supply

• Power Down Mode